First of all, the Chikungunya Virus has almost the same exact symptoms as Dengue. I would suspect that this virus has been around for a while but misdiagnosed as Dengue. No country in the western hemisphere has actively been surveilling for this new virus until recently. Now that they have diagnosed it, the doctors know to run tests for it or provide a diagnosis for it. Certainly the incidence will increase but at the same time, I would expect that the incidence of Dengue will fall by the same rate.
I highly doubt that this is a "new" epidemic but that wouldn't sell newspapers or increase news ratings.
If you are prone to hysteria, then so be it. Dengue has been around for years on St Martin and the island had the same warning and concerns. You can stay home and not live the life you want to live.
It is a miserable viral infection but it's overall incidence should remain low among travelers and will in all likelihood fully recover as they do after the flu.
Be smart and do what you have previously done. Mosquito spray, long sleeve and loose clothing at night and avoid heavy vegetation areas such as pic paradise.
As for the poster that mentioned two different mosquitoes, that would be incorrect. It is only one species of mosquitoes.